Thread: Turbo Diesels
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Old 08-07-2020, 10:00 AM   #42
Ski in NC
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City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
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Turbo cooldown is pretty meaningless on boats. By the time you come off power and get into the slip and get tied up in most all situations the engine has idled way plenty to cool the turbo down. And most of these are water cooled (wet) turbos that cool down quick.

On a car or pickup or road tractor while towing on a hot summer day, and pull into a rest stop to pee, then cooldown can be a concern. And most of those are dry turbos which do get hot.

Regarding turbos and longevity: Any engine, whether turbo or not, running at a high specific hp (that is hp per liter) is not going to live that long. Run at low specific output and they live very long. It is that simple.

Almost all modern engines above say 100-200hp are now turbo. They do make them more efficient. And the turbos are very reliable. Just keep the sea water out of them!!!
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